Generación electroquímica de especie volátil de Pb sobre cátodos de Au/Hg como técnica de introducción de muestra en la determinación de Pb por espectroscopia atómica.
We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, Pb H An electrochemical cell was coupled to an atomic absorption spec trometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operati...
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| Formato: | article |
| Idioma: | spa |
| Publicado em: |
2015
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| Acesso em linha: | http://repositorio.utmachala.edu.ec/handle/48000/6528 |
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Adicionar Tag | Resumo: | We have used amalgamated Au cathodes for electrochemical generation of volatile lead hydride, Pb H An electrochemical cell was coupled to an atomic absorption spec trometer, using the lead absorbance signal as a measure of production of volatile Pb hydride and univariate approach to optimize operational parameters. Cathode of Au/Hg showed better mechanical resistance and better tolerance to interfering ions than other traditional cathodes. Under optimized conditions, a 0.02 μg.L −1(Sbl + 3) detection limit for Pb (II) is reported in aqueous solutions. The accuracy of the method was determined by quantification of Pb in a river water material reference (SLRS-2/National Research Council Canada). |
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